Bad experience cover with King Price

To be honest, my warranty cover has been quite a bad experience to date. I have submitted a claim which was subsequently declined and with the ombudsman for review and awaiting outcome. This morning, I receive an email stipulating how I'm a wonderful customer with a complimentary increase. Worst part is the increase is 60% increase of my existing premium. What's concerning is the alarming increase of 60% almost of my premium, after contacting them the answer I get is there is nothing they can do? I mean 60% how ridiculous is that and there are no payouts even on the policy